Exhibit 10.2

	Andrews Kurth LLP
	Waterway Plaza Two
	10001 Woodloch Forest Drive
	Suite 200
	The Woodlands, Texas 77380
	713.220.4801 Phone
	713.220.4815 Fax
	andrewskurth.com

	Craig L. Stahl
	713.220.4834 Direct
	713.238.7478 Fax
	craigstahl@andrewskurth.com

December 7, 2007

By Facsimile

Mr. Robert L. Ketchand

Boyer & Ketchand

9 Greenway Plaza, Suite 3100

Houston, Texas 77046

Mr. John H. Kim

The Kim Law Firm

4309 Yoakum Blvd., Suite 2000

Houston, Texas 77006

Mr. Francis I. Spagnoletti

Spagnoletti & Co.

401 Louisiana, 8th Floor

Houston, Texas 77002

Mr. David J. Beck

Mr. Alistair B. Dawson

Beck, Redden & Secrest, L.L.P.

One Houston Center

1221 McKinney St., Suite 4500

Houston, Texas 77010

Mr. Melvyn L. Douglas

Melvyn L. Douglas P.C.

5500 Preston Road, Suite 393

Dallas, Texas 75205-2676

Mr. Charles A. Sharman

Nine Greenway Plaza, Suite 3040

Houston, Texas 77046

Re: Case No. 2006-01984; MOSH Holding, L.P. v. Pioneer Natural Resources Company, Pioneer Natural Resources USA, Inc., Woodside Energy (USA) Inc., and JPMorgan Chase Bank, N.A., as Trustee of the Mesa Offshore Trust; In the 334th Judicial District Court of Harris County, Texas

Settlement Agreement and Release executed on or about December 3, 2007

Dear Counsel:

This letter agreement is an amendment and modification to the Settlement Agreement and Release (the “Agreement”) by and among JPMorgan Chase Bank, N.A. individually and as Trustee of the Mesa Offshore Trust, MOSH Holding, L.P., Dagger-Spine Hedgehog Corporation, and the Wiegand Group. Unless otherwise defined, all capitalized terms used herein shall have the meaning stated in the Agreement. The parties agree that these modifications are necessary and proper because the Court scheduled the hearing on the parties Joint Motion for Approval of Settlement Agreement (“Joint Motion”) on January 16, 2008, which is a date different than the January 11, 2008 date anticipated in the Settlement Agreement.

The parties, by and through their undersigned counsel, agree to the following modifications to the Agreement:

1. The date in the first sentence of Section 1(a) is changed from “January 14, 2008” to “January 21, 2008” as the date JPMorgan’s resignation as Trustee of the Trust will become effective.

2. The date in the last sentence of Section 1(d) is changed from “January 14, 2008” to “January 21, 2008” as the date on which the principal outstanding balance on the Note shall not exceed $2.2 million.

3. Paragraph 3 in the proposed order referenced in Sections 2(d) and (e) shall provide “The Trustee’s resignation is hereby accepted by the Court effective 12:01 a.m. on January 21, 2008.”

The parties acknowledge that while this letter agreement does not materially change the Agreement, the modifications to the Agreement are subject to Section 9(i) of the Agreement, which requires the parties hereto to petition the Court with notice to counsel for the parties to the Litigation of any modification of the terms of procedures required under the Agreement. To comply with Section 9(i), the parties agree to file a supplement to their Motion for Approval of Settlement Agreement that identifies modifications contained herein and seeks the Court’s review and approval of the modification. The Supplement to the Joint Motion shall include a revised proposed Order and shall be served on all parties to the Litigation.

The undersigned counsel have authority to enter into this letter agreement on behalf of their respective clients.

	Very truly yours,

	ANDREWS KURTH LLP

	/s/ Craig L. Stahl
	Craig L. Stahl

CLS/dp

APPROVED :


By:	/s/ Craig L. Stahl		By:		/s/ John H. Kim
		Craig L. Stahl				John H. Kim
		Andrews Kurth LLP				The Kim Law Firm
		Waterway Plaza Two, Suite 200				4309 Yoakum Blvd, Suite 2000
		10001 Woodloch Forest Drive				Houston, Texas 77006
		The Woodlands, Texas 77380

ATTORNEYS FOR JPMORGAN CHASE			By:	/s/ Francis I. Spagnoletti
BANK, N.A., INDIVIDUALLY AND AS						Francis I. Spagnoletti
TRUSTEE OF THE MESA OFFSHORE						Spagnoletti & Co.
TRUST						401 Louisiana, 8th Floor
						Houston, Texas 77002

			ATTORNEYS FOR: MOSH Holding, L.P., Keith A. Wiegand, Ronnie McGlothlin, Gordon W. Bader, Roger R. Bean, Jennifer J. Bean, Tracey M. Stump, Scott W. Bean, James Blau, Larry W. Bradley, Richard Brown, Scott Curran, Ron Davis, Mark Dittus, John C. Easton, Jamie Arnold, John Easton Schwab Brokerage, John Easton Schwab Roth, John Easton Schwab IRA, John Easton Scottrade Brokerage, John Easton Trust, Jamie Arnold Schwab IRA, Vicki Easton Schwab IRA, James Figielski, James Figielski Pension Plan, Ami Schecter, Ami Schecter Roth IRA, Kathleen Friend, Patricia L. Hendrix, Ben Hoos, Matt Hoos, Philip Hoos, John W. Hovanec, Nicole M. Kimball, Matthew J. King, Darrell M. Leis, J.D. Maddox, Roy G. Maddox, John McCall, Katrina McGlothlin, Mary R. McNamara, Michael E. McNamara, Monika Meier, Mallory Mikkelsen, Dean P. Miles, Elizabeth A. Miles-Cunningham, Lori Miles, Robert M. Miles, Sharon A. Miles, William Kevin Miles, Gara Sue Pelcher, Jeffrey T. Pelcher, The Pelcher Company Keogh Plan, Jeffrey Thomas Pelcher Custodial for Nathan Allen Pelcher Roth IRA, Gara Pelcher Ten Com, Jeffrey T. Pelcher Custodial for Derrick T. Pelcher, Jeffrey T. Pelcher Custodial for Nathan A. Pelcher, Adriene Rohleder, John Selep, John M. Speight, Gordon A. Stamper, Jessica Stamper, Armin Sternberg, Robert Todd, T.D. Tommey, Lyle Wagman, Barbara Wiedemann, Knut Wiedemann, Nichole Wiedemann, Jerry L. Wolf, and Galen R. Young
By:	/s/ Robert L. Ketchand
		Robert L. Ketchand
		Boyer & Ketchand, P.C.
		Nine Greenway Plaza, Suite 3100
		Houston, Texas 77046

ATTORNEYS FOR MOSH HOLDING, L.P.
AND DAGGER-SPINE HEDGEHOG
CORPORATION


By:	/s/ Melvyn L. Douglas
		Melvyn L. Douglas
		Melvyn L. Douglas P.C.
		5500 Preston Road, Suite 393
		Dallas, Texas 75205-2676

ATTORNEY FOR DAGGER-SPINE
HEDGEHOG CORPORATION


By:	/s/ Charles A. Sharman
		Charles A. Sharman
		Nine Greenway Plaza, Suite 3040
		Houston, Texas 77046

Mesa Offshore Trust (MOSH) Inactive 8-KMesa Offshore Trust Announces Proposed Settlement Agreement, Including Resignation of Trustee and Appointment of Temporary Trustee

1. The date in the first sentence of Section 1(a) is changed from “January 14, 2008” to “January 21, 2008” as the date JPMorgan’s resignation as Trustee of the Trust will become effective.

2. The date in the last sentence of Section 1(d) is changed from “January 14, 2008” to “January 21, 2008” as the date on which the principal outstanding balance on the Note shall not exceed $2.2 million.

3. Paragraph 3 in the proposed order referenced in Sections 2(d) and (e) shall provide “The Trustee’s resignation is hereby accepted by the Court effective 12:01 a.m. on January 21, 2008.”